External Reinforcement Welding for Thin-Walled Plastic Containers
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Solution Overview
Problem
Existing container manufacturing processes for flowable products, such as soap, require complex internal reinforcement and anchoring methods that complicate production and material usage, especially for thin-walled containers that need reinforcement only in specific areas.
Innovation Solution
The reinforcing element is externally fixed and welded onto the container wall, eliminating the need for internal anchoring and simplifying the production process by using a core tube as a support for both longitudinal seam welding and reinforcing element fixation, with optional coding elements for dispenser compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If internal anchoring methods are used to reinforce thin-walled containers, then container stability is improved, but production complexity and material usage are worsened
Solution Approach 1:
The patent inverts the conventional approach by fixing the reinforcing element externally rather than internally. The reinforcing element is welded to the outside of the container wall, eliminating the need for complex internal anchoring structures and reducing production complexity while maintaining stability.
Solution Approach 2:
The reinforcing function is extracted from the internal structure and placed externally. This allows the thin-walled container to maintain its simplicity internally while gaining reinforcement externally, reducing material usage and production complexity.
2Stability of the object's composition
If internal anchoring structures are used to fix reinforcing elements, then reinforcement stability is improved, but manufacturing complexity is worsened
Solution Approach 1:
Instead of anchoring the reinforcing element from the inside, the patent welds it externally to the container wall. This simplifies the manufacturing process by eliminating the need for internal anchoring structures while ensuring stable reinforcement through external welding.
Solution Approach 2:
The core tube serves as an intermediary support structure during the welding process. It provides a stable base for welding the reinforcing element to the container wall from the outside, ensuring proper positioning and stable fixation without requiring complex internal anchoring mechanisms.
3Loss of substance
If thin plastic films are used to save material, then material usage is improved, but structural strength is worsened
Solution Approach 1:
The patent creates a composite structure by combining the thin plastic film container wall with a separate reinforcing element made of weldable plastic material. This composite construction allows the container to use minimal material for the wall while gaining additional structural strength from the externally welded reinforcing element.
Solution Approach 2:
The reinforcing element is applied locally at specific regions of the container where additional strength is needed, rather than uniformly thickening the entire wall. This allows the container to save material in non-critical areas while maintaining structural strength where required.
4Reliability
If complex internal anchoring is used, then reinforcement fixation is improved, but production time is worsened
Solution Approach 1:
By inverting the anchoring approach to external welding, the patent eliminates multiple internal anchoring steps and reduces production time. The reinforcing element is welded directly to the outside of the container wall in a single operation, ensuring reliable fixation while accelerating production.
Solution Approach 2:
The core tube is used as a preliminary support structure during the welding process, providing stable positioning for the reinforcing element before the weld is complete. This preliminary support ensures reliable fixation without requiring additional anchoring steps that would increase production time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces production complexity, ensures stability, and prevents residue accumulation by providing external reinforcement, while coding elements ensure correct container-content matching in dispensers, enhancing usability and preventing incorrect insertions.
Implementation Method 1
a flexible material web of weldable plastic material formed into a welded container body
Implementation Method 2
the reinforcing element is welded from the exterior onto the material web
Data Source
AI summary
A container of a flexible material web of weldable plastic. A reinforcing element is attached on the exterior of a wall of the container. The container may be formed by drawing a flat material web of weldable plastic material over a core tube and welding a longitudinal seam for closing the flat material web to form a tube. A reinforcing element is welded on an exterior of the tube while employing the core tube as an internal cooperating support. The tube is divided and separated along transverse seams into cut-off containers to form the containers. A dispensing system for flowable products includes at least one of the containers and a dispenser provided with a container receiving device for holding the container without closure. The container is formed with sliding guide and a displaceable closure, which is preferably opened when the container is placed on the receiving device.